Transmitter.



No. 880,044. PATENTED FEB. 25, 1908.

S. W. ROTHERMEL.

TRANSMITTER. APPLICATION FILED JAN. 5, 1906..

Inventor:

3 SHEETS-SHEET l.

PATENTED FEB. 25, 1908.

S. W. ROTHBRMEL.

TRANSMITTER.

APPLIGATION FILED JAN. 5,

3 SHEETS-SHEET 2.

In ventor:

A ttest:

5?, I by flammv PATENTED FEB. 25, 1908.

- S. W. ROTHERMEL.

TRANSMITTER.

APPLICATION FILED JAN. 5, 1906.

3 SHEETSSHEET s.

Attest: invntor:

54 M M 4W 7 by Attj UNTTED STATES PATENT SAMUEL W. ROTHERMEL, OF NEW YORK, N. Y., ASSIGNOR TO RTCHARD W. BARKLEY, TRUSTEE, OF MONTCLAIR, NEW JERSEY.

TRANSMITTER.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed January 5. 1906 Serial No. 294.699.

. of New York, have invented a certain new and useful improvement in Transmitters, of

which the following is a specification.

This invention relates to mechanical transmitters for telegraphic purposes, one object of the invention being to produce a transmitter adapted to use under all conditions of batteryand line under which ordinary relalyq's will operate; another object is to reduce t e number of contact-points in transmitters;

another object is to reduce the work of the operator to a minimum; other objects will appear' hereinafter.

The invention consists in features of construction, arrangements, and combinations of devices hereinafter described and more particularly pointed out ,in the appended claims. 1 i

The invention is embodied in the machine illustrated in the accompanying drawings, forming 'part hereof, in whichFigure 1 is an end view; Fig. 2 is a plan view, partly broken away, and with parts omitted; Fig. 3 is a front elevation, partly broken away, and with parts omitted; Fig. i is a perspective view of a detail of'construction; and Fig. 5 is a view of a modification.

The reference character a denotes a base, from which rise standards 1) whose upper ends are united by the transverse bars 0, while (Z designates risers at the sides of the machine for the provisionof bearings for certain parts.

The reference e denotes a drum which extends across the machine, and which is driven in any suitable wayfas by an electric, or mechanical, motor, or otherwise, as may be convenient. This drum e constitutes the main driver of the transmitter, and it may transmit its power by ,fricti'on or by means of teeth thereon.

The reference h marks a gear, shown as a star gear, whictf'has the same axis of motion as the bent lever 51, and f marks another gear which is mounted on an arm of the bent The gear f is normally out of contact with the driver e (the driver 0 is also shown as a star wheel or gear), but when it is thrown into mesh with the driver, it and the gear h are rotated as long as the gear f remains in mesh or contact wlth the driver 6, aswill be understood. Fast to and rotating with the gear h is a wheel i, hereinafter called the cam-wheel, which is provided with projections 7c, preferably on its eriphery but which may he on its side, w 'ch, by their length and disposition, represent a character in the so-called dot and dash code, otherwise called the Morse or the Continental code. Fast to said gear h and cam-wheel 'i is a disk Z which, is provided with one or more pins or projections m, for a purpose presently to ap r. The lever 9 may be connected direcffg to a key-lever, as a lever ferred to pivot ontheileverg asub-lever .0,

and to connect the two levers by aspring, as

the spiral spring 1), which holds the sub-lever 0 against a stop g on the lever 52, and-then to connect the sub-lever with the 'keyleverrn by any suitable form of connection, such as the wire r having a 100' surrounding the key lever and allowing ,t e key-lever to rise, after being depressed, before the sub-lever and the lever g return to their normal positions, under the influence of a spring, as s. The key-levers 'n, are fulcrumed at the rear of the machine, as on a-rod i, and it is remarked that these levers may be so aratecl by the teeth of a comb formed by s ittin the rear bar'of the frame or base, or by small washers, as may be desired. Any suitable form of spring may be used to return the key-levers to their normal positions.

The sub-lever 0 is connected to one member 11. of a toggle by'a slot and pin, the slot being in the member a and the pin 11 passing through said slot and entering the sub-lever. The other member to of the toggle is pivotally connected with a part'of the frame, as with a rod on on which are the spacing wash+ ers y; or these-members may be mounted on the rod' :0 with comb-teeth as s acers between them. Pivotally connecte' with the toggle is a thrust rod 2 which is of a length such that, in its normal position (that shown in Fig. 1), its free end rises above the path of the projection m before-mentioned, there be.-

ing'an arm or stop 2011 the member a to linit the downward motion of said thrust r 2. a

Across the front of the machine-extends a rod or bar 3 from which-extend springs 4 and 5 5, connected, respectively, with the sublever 0 and the toggle-member 11;, but these springs 4 and 5 are so tensioned that spring-'4 returns the parts to the'positions: shown in i Fig. 1"in1s itej of'the'. sprin 5 Suitable.

tain rods and stops which are common to;

duplicated parts, the described mechanisms are'duplic'ated'foreach and every character used in the machine ,'except thatthe projections ,on the cam-wheels "i' vary according to the character they are to represent, and

that some cam-wheels may carry one,-two orv moreduplicatlons-of the projections or cams- 5. 7:, vaccordingto the character th'ey' represent and that there are 'as many pins m on the, disk -fixed'tothe cam-wheel as there are rep resentations -of the character-for which that cam-wheel stands. j .1 Qve'rlying; the cam-wheels 'i is'a universal bar-"7 which is pivoted at 8 to the main frame of the ;machine,' and which bar is adapted. to

3 be raisedandglowered by the cams is, .a suitablereti1rningls ring 9 being employed, if necessary. A b ock of insulation '10 is attached by screws 11 Ito-the 'bar 7 or to some part of it, and a spring'lS is attached-tothe lock 10 by one ormore screws 12 so as to be I electricallyinsulated from the bar? and the; rest of the machine. I abar ,or arm 14 of the mainframe of the machine, which arm, however, is insnlatedr from the main frame-byablockof insulation 15. Near its end, the spring 12 carries a contact-point 16, and right above the point 16, the arm'l4 carries an adjustable screw-j Cohtact-point 17, there being the usual lock-- ing screw 18. The terminals of the telegraph line connect with the screws13. and 17. The'distance between the contact-points. 16 I l'Zkmaybe adjusted as in an ordinary relay or e ln the operation of the machine, the desired key 18, depressed as; in a typewriting machine (the key board is preferably arranged as in standard ty ewriters, with the letters of the alphabet, t 1e digits, and such' other characters as may be desired) and ulls down its corresponding sub-lever 0 and ever.

0 J, and moving-thecorresponding gear it into contact or mesh with the driver a, whereupon the corresponding cam-Wheel ilbeginsztorm tate and lift andyreleasethe uniyersalbar 7, thus closin and'fjopeningj the 'iiirchitj by 65.Ju eans"of*t 1e point 16 17-.' At the sainev Above the spring 12fis Y js'lo'ts' IS-in-the arms 7 time, on the depression of the key, the correspondin toggleu 'w is drawn out by the correspom ing sub-lever 0 into line, (a stopbar 25 extends across the machine to prevent the toggles from being moved too far by the springs 5) and thereupon the corresponding spring 5 throws the -said toggle beyond thel ne of centers thereof and so moves the thrust bar a thereofover into the path of the pinsym that are conne cted"with'the cam- Wheel being "operated, but doing -'so late enough to miss that pin which previously pushed back said' thrust rod and toggle. The'next pinj m strikes theendof'the rod 2 and pushesthe toggle beyond its line of centers against: theresistance of the spring 5, whereupon the str'on 'er Isp'ring- 4 acts to re- I turnth'e'sub-lever an ftoggle to. their normal positions, and so1di'sengagcs'the' gear f from the driver-1a, and the cam-Wheel 'i comes to rest,- with the universal bar' 7 in a depression or kerf thereof,-'thus opening the clicuit at the contact-points 16- 1 7, a s.in a key. 7

The operation is precisely the same in the case of all-keys, except that the distance through which the cam-wheel rotates may vary, for some letters areshorter than others jand there may be more of them-on the corre- 'sponding cam-wheehfor instance, theremay be five or six cams, each representing .the sin-' gle dotthat stands fore,,? on the E cam-wheel, and? there would be an equal number of pins mfor operatingthe. togglemeans,: or-'there maybe but one character I represented'on a cam-wheel; m Wh1ch case,

there is but one pin meorresponding thereto. The driver. 6 operates all the gears shown,

but it would be no departurefrom t e invention if more than one'driver were used in one and thesame machine. 1 Also, the contactpoints 16 17 shown are opened and closed by all the mechanisms shown, but itl'would be. no departure from theqinvention and the claims herein if more than one pair of such contact points were-provided and certain of the cam-wheels-operated'one such pair and certain other of the cam-wheels operated an? other such pair. Again, the camewhe'els shown aqt directly upon the universal bar 7 I but it .;is.- within the scope of this invention 115 anclot certain-of, the claims for the cam-g wheels to" actuate the universal bar 21f through the medium of lifters or pivoted bars 7", one'for'e'ach cam-wheel, which are movable independently one of another: [.The 1 20 bar 21 is carried by arms 20, and there is a separate" arm 7 for each mam-wheel, said arms 7 being'liftedby the cam's 7C.-, The

whereby a y arm ,inaylbe removed at any 5 timewithout.disturbing'any c ther arm. I

I Many other mogliifigations may be inade ama e, uivalents be ed. withoutdeparting" from't e'spirit ofth in utioi'i.

slip over a .rod 19,

. 'axis of said gear, a gear mounted on said le' seems loosely mounted'on a shaft 22 which shaft has a longitudinal groove 23 therein, and which shalt is fixed in the framework against motion. Washers 24, provided .with tongues entering said groove 23,'are placed between the levers g and the adjacent cam-wheels 'i' ,so that wrong-cam-wheels will not be actuated (aswell as the proper ones) by the levers 9 through frictional contact.

What I claim as new and desire to secure by Letters Patent of the United States is 1. In a transmitter, the combination with the movable member of a ClIOILltOlQSBI-, of a cam-wheel for operating the said member, a toothed gear to which said cam-wheel is con nected, an arm pivoted on the axis of said gear, a tooth gear mounted on said. arm and meshing with the first-named gear, a tooth driver from which the second-named gear is normally disengaged, means for swinging said arm to engage said SGCOHi'LHMHBdQM with said driver, means for locking said arm with said gear and driver mesh with each. other, and means for throwing otl said looking means when the cam-wheel reaches a given position.

2. In a transmitter, the combination with the movable 'memberof a circuit-closer, of a cam-wheel for operating said member, a tooth gear to which said cam-wheel is connected, an arm pivoted on the same axis as said gear, a tooth gear mounted on said arm and meshing with the first-named gear',.a

toothed driver from which the second named gear is normally disengaged, lrey-actuated1 means for swinging said arm to engage said second-named gear with said driver, a toggle for locking said arm with'said gear and said driver in mesh with each other, a thrust-arm connected with said toggle, and a pin or ro jection rotating with said cam wheel an ooacting with said thrust-arm its moveseid toggle from its locking-position: i

3. In a,transmitter, the combinationwith the movable member of a circuit-closer, of a cam-wheel for operating said member, a toothed gear with which said cam-wheel is connected, a bent lever fulcrumed on they ver and meshing with the firstmamed gear, a toothed driver'from which the secondnamed gear is normally disengaged, a sublever pivoted onthe bent lever and held against a stop on a key-lever connected-with said sub-lever, a toggle having one member pivoted on the fixed frame and the other member pivotally connected with said. sub-lever, a thrust-arm pivotally connected-"with said toggle, and a pin or projection connected withthe. camwheel and acting on said thrust-arm to throw said toggle beyond its line of centers.

l. In a telegraph. transmitter, the combination with a pair of percussive contactpoints, of a rotatable camor telegraphthe bent lever by a s ring,

iETi

wheel ior actuating one of said points, a 1'0- tary driver havi its axis of motion outside of said cam-whe dl, and key-operated meche anism for connecting and disconnecting said cam wheel to and from said driver;

5. In atransmitter, the oombinationwith two percussive contact-points, of a plurality of cam-wheels tor-movingone of said points,

a driver whose axis of motion is external to said cam-wheels, and a; -plnralityv at mechanisms (one for eacheam-wheel) for connectmg and disconnecting said cam wheels with and from said driver independently of one,

another. 6. In a transmitter, the combination with two percussive contact-points, of a plurality of cam-wheels for moving one of said points,

a driver whose axis of motion is external to said cam-wheels, a lurality of key actuated mechanisms (one or each cam-wheel) for connecting said cam-wheels independently:

with said driver, means for locking Said mechanisms in gear with said driver, and means for releasing said mechanisms after the cam-wheels have moved predetermined distances. 7. In a telegraph-transmitter, the combination with a telegraph wheel having 'a fixed axis of motion, a driver external to said wheel, a lever iulcrumed on the axis of said wheel and carrying a tooth gear, a gear on said wheel meshing with said tooth gear, a snblever fulcrumed onsaid lever, a stop for limiting the relative motion of said levers in one direction, and a spring for oonnectin said levers and holding said sub-lever an stop in contact with each other.

8. In a telegraph-transmitter, nation with. a telegraph-wheel, of lever-actuated mechanism for connecting said wheel with a driver, said driver, a sub-lever pivotally the combiconnected with said lever, a stop for limiting the relative motion of said levers, a spring for holding stop and lever together in con tact with each other, and a toggle-mechanism connecting said. snb-lever with the framework of the machine and locking said leveractuated mechanism in operative position.

95,111 a telegraph-transmitter,the combination with a telegraph-wheel, a driver,- and lever-actuated mechanism for connecting said wheel with said driver, of a sub-lever pivoted. on said lever and spring-held against a stop-thereon, a toggle-mechanism for holding said lever-actuated mechanism in working position, and means for throwing off said toggle-mechanism when said wheel has rotated a given distance.

10. In a telegraph transmitter, the combination with two percussive contact-points, of a plurality .of progressively rotatmg telegraphor cam-wheels, a universal bar oper ated by said wheels and operating said contacbpoints, a star-gear driver, and a luralityol stangearsnfor each of said whee s normally' disengaged from said driver for connecting and disconnecting said Wheels to and from said driver.

11.. In .a telegraph transmitter, the combination with a pair of percussive contactpoints, of a plurality of rotary telegraphor cam-wheels, a universal bar operated by said Wheels and operating saidj po nts, a starear driver, a lurality of star-gears for sac of said whee s normally disengaged from said driver for connecting and'disconnecting said mally disengaged.

. gra

wheels to and from said; driver, means for locking said star gears-in mesh with said driver, and appliancesforireleasin said gear from said dr1verafter.the said wheels have rotated predetermined-distances.

12. In a telegraph transmitter, the combination with. a pair of percussive contactpoints, of a plurality of, rotary camor telegra h-wheels, a universal bar operated by sa1 points, an arm for each telegraph-wheel pivwheels and. operating said contactmotion thereof, a star-gp'ar pivoted on each arm and connected wit its wheel to. rotate it, a star-gear driver from which said starigears are normally f disengaged, means for' ocking said star-gears in mesh With said driver, and ap liances for releasin' said stargears from sai driver after said-w eels have rotated predetermined distances. 1 i I 14. In a telegraph transmitter, the combi nation with a pair of percussive. contactoints, of a rotary wheel providedwith roeaop ia acter, a star-gear driveiya star-gear movable into and out of mesh WlthSfiJd driver and connected With said rotary wheel to rotate the same. y

15. Ina telegraph transmitter, the combination with a pair of percussive contactpoints, of a rotary wheel provided with ro-c ections duplicatin'g a dot and dash c aracter, a star-gear driver, a star-gear movable into and. out, ofmesh with said driver-land connected with said wheelto rotate itfmeans' for lo'ckin said star-gear in mesh with said 1 driver, an appliances for releasing said stargear from sa1 of one of said duplicatedcharacterz driver after thetransmission" I; 6.0

16. In a telegraph transmitter, the combination of a pair of percussive contact.- points, with a plurality-of rotary telegraph-1 .wheels each provided with prog'ections dupli i the "dot an .1

catin a particular character o dash-T code, a star-gear driver, a star-gear for each telegraph-wheel and movable into and out of mesh with said driver and connected with its Wheel to rotate it, toggle-mechanisms for locking said star-gears in mesh'with' said driver, and means for throwing off said togstar gears igle-mechanisms to release? said pm said. driver. 1 7.; In a telegraph transmitter,thecombination of a driven shaft, a power transmitdriven there y, a-ifixed shaft, 'a c aracter ting clutch ear thereon, .a couplin device wheel mounted idly thereon, alever, and

means operated by said lever for engaging said coupling device with said wheel during the-transmission of on said wheel.

Signed at NeWTYork in the county of New January, A. D. 1906. v

SAMUEL W. ROlI IEldl/IEL.

Witnesses A. WHITE,

R. W. BARKLEY.

jections duplicating a fdot, and dash 0 areach individual character York and State of New York this {1th day of 

